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Newton's first law of motion
...by an unbalanced force
Yes. If it is at rest to start with, it will remain at rest until an external force acts on it. Likewise, an object starting in motion will remain in that same motion until an external force acts on it.
unbalanced force
Inertia guarantees that an object at rest will remain at rest and an object in motion will remain in that same motion, so long as there is no external force acting on that object. Alternately, there could be force acting on it as long as that force adds up to zero.
Newton's first law of motion
Force
An object at rest tends to remain at rest - an object in motion tends to remain in motion.
The object will remain at rest if it was at rest or will maintain its motion with uniform velocity if it was moving.
...by an unbalanced force
An object in motion will remain in motion or an object at rest will remain at rest unless an unbalanced force acts on it.
A force, that may come from a collision with ... Another object.
Yes. If it is at rest to start with, it will remain at rest until an external force acts on it. Likewise, an object starting in motion will remain in that same motion until an external force acts on it.
unbalanced force
An object at rest will remain at rest unless acted on by an unbalanced force. This is part of Newton's third law of motion.
Inertia guarantees that an object at rest will remain at rest and an object in motion will remain in that same motion, so long as there is no external force acting on that object. Alternately, there could be force acting on it as long as that force adds up to zero.
Inertia. Also described in Newton's First law of Motion.